Texas Instruments TI-84 Plus Guide Book

Chapter 17: Activities 486
4. Press q 2 to select 2:Zoom In. Use |, ~, }, and † to move the free-moving
cursor onto the apparent intersection of the functions on the right side of the display.
As you move the cursor, notice that the
X and Y values have one decimal place.
5. Press Í to zoom in. Move the cursor over the intersection. As you move the
cursor, notice that now the
X and Y values have two decimal places.
6. Press Í to zoom in again. Move the free-moving cursor onto a point exactly on
the intersection. Notice the number of decimal places.
7. Press y /
5 to select 5:intersect. Press Í to select the first curve and Í
to select the second curve. To guess, move the trace cursor near the intersection.
Press Í. What are the coordinates of the intersection point?
8. Press q
4 to select 4:ZDecimal to redisplay the original graph.
9. Press q. Select
2:Zoom In and repeat steps 4 through 8 to explore the apparent
function intersection on the left side of the display.

Texas Instruments TI-84 Plus Specifications

General

Battery type	AAA
Power source	Battery
Number of batteries supported	4
Type	Graphing
Cover	No
Form factor	Pocket
Control type	Buttons
Product color	Black
USB port	Yes
USB 2.0 ports quantity	1
Digits	- digits
Display number of lines	8 lines
Display number of characters	16
RAM capacity	0.024 MB
ROM capacity	0.480 MB
Storage media type	-